When a long-lost uncle form Vienna pays a surprise visit, Madeline's dreams of family life seem wonderfully fulfilled - until she finds herself in the middle of an unscrupulous scheme. Madeline must call upon all of her courage and cleverness in order to foil an evil plot to take her from the only family she's ever known. Join Madeline, Miss Clavel, Pepito, her eleven school friends and ever-so-smart dog Genevieve in a thrilling Paris adventure as they all rediscover the true meaning of family.